On 15/12/2020 08:46, Martin Brown wrote:
Some but by no means all can be charged from the cigarette lighter
socket. Many modern cars disable it when asleep though. Older ones OK.

I think my 20yo last-of-the-model car probably counts as older.

Lighter socket is linked to the ignition, which is handy as it means my
satnav powers off when parked.

Andy